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Code clean up. 

llvm-svn: 35220
This commit is contained in:
Lauro Ramos Venancio 2007-03-20 20:09:03 +00:00
parent 550cf0369c
commit 971aa18867
1 changed files with 20 additions and 23 deletions
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43
llvm/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
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@ -381,6 +381,20 @@ void ScheduleDAG::AddOperand(MachineInstr *MI, SDOperand Op,
}
// Returns the Register Class of a physical register
static const TargetRegisterClass *getPhysicalRegisterRegClass(
const MRegisterInfo *MRI,
MVT::ValueType VT,
unsigned reg) {
assert(MRegisterInfo::isPhysicalRegister(reg) &&
"reg must be a physical register");
// Pick the register class of the right type that contains this physreg.
for (MRegisterInfo::regclass_iterator I = MRI->regclass_begin(),
E = MRI->regclass_end(); I != E; ++I)
if ((*I)->hasType(VT) && (*I)->contains(reg))
return *I;
assert(false && "Couldn't find the register class");
}
/// EmitNode - Generate machine code for an node and needed dependencies.
///
@ -478,20 +492,12 @@ void ScheduleDAG::EmitNode(SDNode *Node,
if (InReg != DestReg) {// Coalesced away the copy?
const TargetRegisterClass *TRC = 0;
// Get the target register class
if (MRegisterInfo::isVirtualRegister(InReg)) {
if (MRegisterInfo::isVirtualRegister(InReg))
TRC = RegMap->getRegClass(InReg);
} else {
// Pick the register class of the right type that contains this
// physreg.
for (MRegisterInfo::regclass_iterator I = MRI->regclass_begin(),
E = MRI->regclass_end(); I != E; ++I)
if ((*I)->hasType(Node->getOperand(2).getValueType()) &&
(*I)->contains(InReg)) {
TRC = *I;
break;
}
assert(TRC && "Couldn't find register class for reg copy!");
}
else
TRC = getPhysicalRegisterRegClass(MRI,
Node->getOperand(2).getValueType(),
InReg);
MRI->copyRegToReg(*BB, BB->end(), DestReg, InReg, TRC);
}
break;
@ -523,17 +529,8 @@ void ScheduleDAG::EmitNode(SDNode *Node,
if (VRBase) {
TRC = RegMap->getRegClass(VRBase);
} else {
TRC = getPhysicalRegisterRegClass(MRI, Node->getValueType(0), SrcReg);
// Pick the register class of the right type that contains this physreg.
for (MRegisterInfo::regclass_iterator I = MRI->regclass_begin(),
E = MRI->regclass_end(); I != E; ++I)
if ((*I)->hasType(Node->getValueType(0)) &&
(*I)->contains(SrcReg)) {
TRC = *I;
break;
}
assert(TRC && "Couldn't find register class for reg copy!");
// Create the reg, emit the copy.
VRBase = RegMap->createVirtualRegister(TRC);
}